Window latch



` Dec. 20, 1927.

F. F. KOZAK ET Al.

WINDOW LATCH F1 1pd sept. 2, 192e Q7 ifmk @(0 Bak George a7' PatentedDec. ZO., 1927.

UNITED STATESL FRANKF. KOZAK AND GEORGE LUTZ, OF MILWAUKEE, ISCONSIIN'.

WINDOW LATCH.

Y Application filed September 2, 1926. rSerial No. 133,222."

This invention relates to window latches.

Objects of this invention are to provide a simple. type of window latchwhich may be applied to the window `sashes in` an inconspicuous manner,and which may be used without damage or abrasion of the sashes, andwhich nevertheless is effective in operai tion.

l Aio be easily moved past each other, as the tongue will clear theupper end 13 of the Further objects are to provide a novel form ofwindow latchwhch will permit the use of t-he window in an ordinar y andwhich will also allow the locking of the window in a partially openedcondition for ventilation, for instance, and will prevent furtheropening of the window.

An embodiment of thel invention is shown .in the accompanying drawingsin which:

Figure 1 is a face view of the device showing it applied to the windowand showing a fragment of the window;

Figure 2 is a sectional view transversely through the window;

Figure 3 is a sectional view on the lin 3-3 of Figure 1. j

Referring to the drawings, it will be seen that the upper window pane isindicated by the reference character 1, and the lower window pane by thereference character 2. These window panes are carried in an upper sash 3and a lower sash 4. j The upperysash is provided with a plate 5 securedthereto by means oi screws 6 which are counter sunkv in the plate 5, asshown in Figure 2, and it is to be noted that the lower end of the plateis provided with an enlarged portion 7. This portion 7 forms, inreality, a pair of ears, between which a movable tongue 8 is pivotallycarried by means of a pintlepin 9. Preferably, the tongue is'slightlynarrower than the space between the .ear-s and is pressed in onedirection by means ofa spring 10 which loosely surrounds the pintle pin.This tongue is provided with a latching shoulder which lits acorresponding recess 11 formed in one of the ears 7 as shown in Figures1 and 3, to thus latch the tongue against inadvertent motion.Preferably, also the tongue is provided with a rounded cut-away portion12 for easy insertion of the linger when the tongue is turned into thedotted line posi- ,tion .shown in Figure 2. When in thislast mentionedposition, the/window sashes may lower window sash.` yThis upper portion13 ol the lower window sash is provided with a contact or bearingplatelheld in place Vby means of a counter sunk screw 15. It

prong 16 to prevent is also provided with a its turning out of place. v

In using the device, the tongueS is rocked` f outwardly at right anglesto the upper window sash, as shown in full lines -in Figure 2, and whenit is attempted to move either of the saslies, the tongue will contactwith the bearing plate `14C and will'arrest and prevent further motionof the sashes.

On the other hand, when it is desired to y operate the windows in theusual manner, it 1s merely necessary to rock the tongue 8 into thedotted line position shown in Figure 2,;where such tongue will passfreely kb Athe lower sash without engagement. It Wi l be seen,therefore, that a very simple and inconspicuous latch has been provided`for ak window which will permitv the partial opening of the window, butwill restrain the sashes against further motion.

' Although the invention has been described i in considerable detail,such description is intended .as illustrative rather than limiting asthe invention may be variously embodied and as the scope of suchinvention is to be de termined as claimed.

We claim: y

A latch for ay pair of relatively movable window sashes, said latchcomprising a bearing plate carried by one end of one of said sashes, aksecond plate carried by the face of the adjacent sash and securedthereto and having projecting ears, a tongue pivotally mounted betweensaid ears and adapted to extend either outwardly at right angles to thesecond mentioned plate or in alignment therewith, said tongue beingadapted tov con tact with t-he bearing plate when it projects outwardlywithrespect to'said second mentioned plate, lsaid tongue andl saidsecond mentioned plate having interengaging spring pressed retainingmeans for temporarily holding said tongue in its outwardly projectingposition.

In testimony that we claim the foregoing we have hereunto set our handsat -Mil- Vwaukee, in the county of Milwaukee and

